High performance liquid chromatography



FIG. 1 is a slightly offset side view of an end-nut for a high performance liquid chromatography showing our design.

FIG. 2 is a slightly offset side view of an end-nut for a high performance liquid chromatography showing our design.

FIG. 3 is a side view of a column fitted with the end-nut of FIG. 1; and,

FIG. 4 is a side view of a column fitted with the end-nut of FIG. 2. 

The ornamental design for a high performance liquid chromatography, as shown and described. 